Quote Originally Posted by Deborah View Post
Freezer is the best way.....and before people get mad

Mice under the age of 10 days are resistant to CO2 and could take up to 50 min of exposure to CO2 before being effective and therefore freezing is recognized as an acceptable method of euthanasia by the AVMA
Is there a time when rats should be culled in the freezer or are they separate and need co2 all the time? I guess it's kind of moot since balls usually start on mice and then move to rat pups, but I'm still interested to know.

Also, does it matter what kind of freezer? Like between the manual and auto defrosting freezers?